He is very ______in the ________book.

That kind of plant can be made ______ paper and paper can be made ______ wood

Michael __________ here to see you and he____________ a note on your desk

Where is Andy— He________ be in the library. He said he would borrow books in the morning.

＿＿＿＿to my regret, I am unable to accept your warm invitation